You're got to admire the spirit of raw capitalism that drives the world's favourite tat bazaar, as exemplified by the case of the eBay promotional USB Xmas lights.
A snap of the eBay Xmas lights eBay apparently recently handed out strings of illuminations, as seen here, to selected users, presumably as a way of thanking them …

Tit for tat

@AC re: heh heh

Why? They've got some media publicity in the crucial Christmas period, and all they've paid for it is the tiny amount in costs to make the things in Taiwan. And then they even get some of that back - if not all or more - from the fee they charge people to sell them!

Some people

Bidding's already up to £7.50 on one auction, several are up to a fiver with hours to go. There's even some enterprising souls trying to get £25 BIN. Just proves you can sell anything if it has a USB connector.